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Infiniti Q45Model year report

1990 Infiniti Q45 Problems

Complaints
28filed with NHTSA
Median mileage
40miles, 2 complaints with mileage
Recalls
1campaigns on record
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA crash rating
—overall rating starts with 2011 models
EPA fuel economy
17 mpgcombined, 4.5L 8-cyl RWD · 15 city / 20 hwy

Sources: NHTSA records for the 1990 Infiniti Q45 (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 28 consumer complaints for the 1990 Infiniti Q45. The part named most often is transmission and drivetrain, with 14 complaints (50% of the total), followed by engine cooling (3) and visibility (3). 2 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 40 miles. Of all complaints, 1 involved a crash, according to the filers. NHTSA lists 1 recall campaign and 7 technical service bulletins for this model year.

Not compared (before 2008). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Transmission and drivetrain: “I was tricked into buying this vehicle, being a first time buyer and divorced. Including this major fuel leak (which has not been established exactly where the leak is coming from) the transmission is gone. Even if the transmission is replaced the vehicle is still to hazardous to drive. I am at my wits end with this car because I still owe money on it.”

NHTSA complaint #717648, filed 2000-01

Mileage when problems were reported

100% of the 2 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 40 and 40 miles.

100%0–100%10–250%25–500%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (2 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 40 miles.

Complaints by year filed

Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.

199519961997199861999200020032004
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 1990 Infiniti Q45 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
Q45 RWD4.5L 8-cyl4-speed automatic152017$4,850

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 1990 Infiniti Q45 → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 7 on record; the latest 7 are shown.

Other model years of the Infiniti Q45

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2004742,1732—18—Not enough data
200312100,0001—18—Not enough data
20022063,0001—18—Stable
20015174,6631—18—Not enough data
2000918,2331—18—Not enough data
19999114,0000—18—Not enough data
19981477,0003—18—Not enough data
199712125,0003—18—Not enough data
19967—0—17—Not enough data
19957—0—17—Not enough data
199430—0—17Not compared (before 2008)Stable
19922810,5001—17Not compared (before 2008)Stable
199134—2—17Not compared (before 2008)Stable
199028401—17Not compared (before 2008)Stable

All Infiniti Q45 model years · Best and worst years by complaints

Frequently asked questions

How many NHTSA complaints does the 1990 Infiniti Q45 have?

NHTSA recorded 28 consumer complaints for the 1990 Infiniti Q45 as of Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 1990 Infiniti Q45 is reported most often?

Transmission and drivetrain is named most often, in 14 complaints (50% of the total), followed by engine cooling with 3.

Has the 1990 Infiniti Q45 been recalled?

NHTSA lists 1 recall campaign for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 1990 Infiniti Q45 get?

The EPA rates the 1990 Infiniti Q45 (Q45, 4.5L 8-cyl) at 17 mpg combined, 15 city and 20 highway, with an estimated annual fuel cost of $4,850 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 1990 Infiniti Q45 reported?

Among the 2 complaints that include a mileage, the median is 40 miles and the middle half falls between 40 and 40 miles; 100% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.